Old PC overclocked like a boss. BUT, I think my BIOS is showing something different.

nmakes

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May 18, 2013
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I have this:

CPU: Intel Pentium 4 511
Mobo: Intel D101GGC
RAM: DDR400 1.5 GB (1x1 and 1x 512MB)
HDD: 80 GB

Well, I just went to my BIOS and increased the system memory speed from 400MHz to 533MHz. On the first page of the BIOS (The general tab) - before overclocking - it said:
System bus speed = 533 MHz
System memory speed = 400MHz

After I overclocked, it said
System bus speed = 533 MHz
System memory speed = 800MHz.

Q1. I want to understand how that happened. And the one which I increased, did that increase my processor's clock speed also?

Q2. CPU-z showed :
Rated FSB = 400MHz.

now it shows,
Rated FSB = 533 MHz.

So, I guess all went right. Right?

Q3. In memory tab in CPU-z, it first showed DRAM frequency = 200MHz. Now it shows DRAM frequency = 233.4 MHz. I think that is because, for DDR the speed shown is actually half the real speed. So, what actually is DRAM frequency?

Q4. I still can increase the memory speed from 533 MHz to 667 MHz in my BIOS. So, should I do it? Right now, it is giving better performance than before. AND MY WINDOWS EXPERIENCE INDEX HAS INCREASED.

CPU: 2.7 to 2.9
RAM: 4.2 to 4.3
Graphics: 2.0 to 2.2
Gaming Graphics: 3.1 (no change)
Primary Hard Disk: 5.3 (no change)

HOW DID THE CPU SCORE CHANGE? I CAN UNDERSTAND ABOUT THE GRAPHICS BECAUSE I HAVE AN INTEGRATED GRAPHICS WHICH TAKES SOME RAM TOO, BUT HOW CPU? SO DOES THAT MEAN MY CPU PERFORMANCE INCREASES TOO? (CPU-z still shows 2.8 GHz cpu speed - that's the stock speed)
 

nmakes

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BTW, if when I try to OC it more (from 533 to 667 MHz) everything works fine, but, windows 7 ultimate shows an error saying "windows could not load properly" (and then the windows setup type of a thing comes). When I revert it back to 533 everything works fine...

AND YA.. I ran the WEI test again. Now my CPU is rated 3.4 (from 2.9 to 3.4)